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[Applications and challenges of ultra-high molecular weight polyethylene fibers in minimally invasive medical devices]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi
Shi S   +9 more
europepmc   +1 more source

基于LSTM-MIV神经网络的SF6断路器触头电寿命预测

open access: yesGaoya dianqi
文中基于LW30-40.5型SF6断路器全寿命烧蚀试验数据,采用归一化异常指数F反映断路器触头剩余电寿命,0表示电寿命完备,1表示电寿命耗尽。根据断路器分闸动态电阻—行程曲线,提出了将动态电阻—行程曲线上行程大于8 mm且电阻值大于500 μΩ的第一个峰值点作为断路器主触头接触阶段与弧触头接触阶段分界点。据此得到反映断路器触头异常指数F的5个特征参数,采用皮尔逊相关系数法对特征参数进行独立性分析。通过LSTM神经网络建立了基于特征参数与异常指数F之间的回归预测模型,F回归预测均方差和绝对平均误差分别为0.
马飞越   +5 more
doaj  

[Impact of preoperative cardiology consultation on major adverse cardiac events in non-cardiac surgery patients: a retrospective cohort study]. [PDF]

open access: yesNan Fang Yi Ke Da Xue Xue Bao
Wang P   +8 more
europepmc   +1 more source

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